I used to eat a lot of soybeans - usually I'd use the white soybeans just like dry white beans - soak, cook, eat. They do make a pretty good ham & bean soup. The black soybeans would go into chili and "black bean soup".

They take a bit longer to cook, and do need more seasoning, but other than that they're pretty good. We liked them a lot, but now I'm avoiding soy products because of health issues - now my dried soybeans are used to blind bake pies.

gat a handfull of the beans and wash them well, put them in a jar with a little water and a peice of cloth on top as a cover, wash them daily (twice daily is best) and when the sprout out to a good length, you can put them in a salad or even a stirfry :)